Shi, B.Palukaitis, P.Symons, R.2007-02-202007-02-202004Virus Genes, 2004; 28(3):277-2830920-85691572-994Xhttp://hdl.handle.net/2440/284The original publication can be found at www.springerlink.com © Springer. Part of Springer Science+Business MediaTomato aspermy virus RNAs derived from infectious cDNA clones exhibited a number of sequence alterations in the 5' non-translated region (NTR). These included a deletion of the first four residues in both RNAs 1 and 2, transversion of residue 5 from a G to a U in RNA 1, and transversion of A to C at position of 50 of RNA 1. These alterations were not stable in the infected plants while the insertion of a U residue between nucleotides 1 and 5 of RNA 1 was stable in the infected plants. Generation of these sequence alternations was not dependent upon either the host species or the concentration of the inoculum. The sequence alterations also did not occur on passage of wildtype virus. Rather, the sequence alterations related to transcription from the cauliflower mosaic virus 35S RNA promoter-driving infectious cDNAs. The alternations observed had no impact on symptoms or infectivity, but did affect the accumulation of specific viral RNAs. The data also demonstrated the existence of some plasticity in the sequence of the 5' NTR.clones containing a cauliflower mosaic virus 35S promoterenCauliflower mosaic virusmutationsnon-translated regionreplication fidelityTomato aspermy virus35S RNA promoterJournal article002004035810.1023/B:VIRU.0000025775.20862.500002210997000062-s2.0-354303460957098